I sent in a chunk of applications early in Sept, and just found out two of my manuscripts under review were accepted at good but not earthshattering journals (impact factors 3.5ish and 4.5ish). Is this sufficient reason to contact the search committee to send an updated CV, or is this just pestering? What are the criteria folks use to decide when to send an updated application to the SC? And do they actually look at the revisions?

That seems like a pretty substantial change to your CV. I would send a brief email explaining that you had two papers accepted and you would like to submit a revised CV that reflects that (include it as an attachment).

In my eyes (and I'm just an applicant) only contact them with substantial changes (e.g., paper accepted, grant accepted, received a (prestigious) award, etc.). Probably a good rule of thumb is whether you think this change makes you seem more sufficiently more impressive to a committee it is worth submitting.

I would send in the revised CV if the new pubs are first author or other similar major intellectual contribution on your part. Worst case scenario is they don't consider it. Psych journals with 3.5 to 4.5 IFs are generally well respected journals in the field.

If you're one of those people with 50 pubs then you might not bother, but otoh even in that case it shows how much you can accomplish per unit time. If you're more junior this is HUGE and you should definitely update.

I have a similar question. I just found out that I won a research award - it is a student award (think "top student researcher in developmental/social/clinical") so maybe not that big a deal? Is this worth sending an updated CV? I just submitted two apps yesterday that haven't reached the review date yet and have others elsewhere that are past their review date so maybe it is too late.

ABD - given that you're a grad student I think it would be good to submit that update. I'm assuming your research record is relatively thin (at least compared to postdocs, assistant profs, etc) so this kind of update is useful, especially if you have a lot of papers "in prep" so no one can really assess your research.